Crank device for internal-combustion engines



0. H. EBMEYER CRANK DEVICE FOR INTERNAL COMBUSTION ENGINES- Filed Aug. 25, 1924 Patented Feb. 24, 1925.

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Application filed August '25, 1924. Serial No. 733,901.

To all whom it may concern:

Be it known that I, OLIVER H. EBMnYnR, a citizen of the United States, residing at Boydsville, Clay County, Arkansas, have invented a new and useful Crank Device for Internal-Combustion Engines, of which the following is a specification.

This invention relates to crank devices for internal combustion engines, and is specially designed and adapted for use in cranking the engines of Ford automobiles.

An object of. the invention is to provide an improved crank comprising a. removable member and a member permanently mounted in the front support in alinement with the crank shaft with which the removable member may be engaged and operated to crank the engine and removed after the engine has been operated.

Another object of the invention is to provide the permanently mounted member of the crank device with a detachable ornamental cap which may be removed when it is desired to connect the crank therewith and replaced after the engine has been operated.

Other objects will appear from the fol lowing description, reference being made to the drawing in which- Fig. 1 is a View showing the releasable crank in position in which it is about to be moved into engagement with the ratchet supporting crank member.

Fig. 2 is a viewshowing the ornamental cap in connection with the ratchet supporting crank member.

Fig. 3 is a cross sectional view on the line 33 of Fig. 1.

The end of the crank shaft 1 has the usual belt pulley 2 secured thereon by the starting pin 3 passing diametrically through the crank shaft and the pulley.

The front support 4 has a bushing sleeve 5 secured, therein. A shaft member 6 is mounted in the bushing 5 for longitudinal and rotary movements and has on its rear end a starting ratchet 7 movable into and out of engagement with the starting pin 3 on the crank shaft of the engine. The shaft 1 has a pin 8 extending diametrically there through near its forward end. A washer 9 on the shaft 6 serves as an abutment for the forward end of a coiled spring 10, the rear end of which spring bears against the bushing 5. The power of the spring 10 is exerted to hold the shaft 6 in its forward position as shown and to move the shaft to forward position after each cranking operation in order to disengage the starting ratchet 7 from the starting pin 3.

The hand crank 11 has a sleeve 12 attached to the end opposite from the handle and projecting beyond said end. The sleeve 12 may he slipped over the forward end of the shaft 6 and is provided with diametrically opposite notches 13 designed and adapted to receive the pin 8 and to obtain clutching engagement therewith. hen the parts are so engaged the application of slight force to said parts will engage the ratchet 7 with the pin 3, after which the engine may be started by operation of the crank. After the engine has been operated the handle member 11 may be disengaged and an ornamental cap 1e applied to the end of the shaft 6. The cap has an internal flange llintermediate of its ends. The forward end of said cap is closed and the rear end has an opening therein of sufficient size to receive the end of the shaft 6. The rear end and the flange 14* each has a pair of diametrically opposite slots 15 to permit the cap to be passed over the pin 8 and turned to obtain engagement therewith, as shown.

My invention obtains the beneficial result of permitting the hand crank to be removed or detached from the ratchet supporting member. This is desirable in many instances because the crank having permanent attachment with its support constitutes an undesirable obstruction. Moreover, the crank is more or less unsightly as a permanent attachment and the use of the ornamental cap 14 enhances a general pleasing appearance. V

I do not restrict myself unessentially, but what I claim and desire to secure by Letters Patent is 1. A crank device for internal combustion engines comprising a support, a shaftmounted in said support for longitudinal and turning movements, a ratchet attached to the rear end of said shaft for engagement and disengagement from astarting pin. a pin extending through said shaft near its forward end, a washer on said shaft at the -rear side of said pin, a spring encircling said shaft between said washer and said support, a crank member, and a sleeve tached to one end of said member arranged to receive the forward end of said shaft and having notches arranged to receive said last named pin.

2. A device of the character described comprising a support, a shaft mounted in said support, a pin extending through said shaft near one end thereof, a Washer on said shaft between said pin and said snp port a spring encircling said shaft between. said Washer and said support, and a sleeve arranged to enclose the end of said shaft and to engage said pin.

OLIVER H. EBMEYER. 

